What Is 6G? The Timeline, the Promised Speeds and What Is Actually Real

What is 6G?

6G is the informal name for the sixth generation of mobile network technology, the successor to 5G. Inside the International Telecommunication Union (ITU) it is called IMT-2030. The ITU set out its framework and objectives in Recommendation ITU-R M.2160, approved on 13 November 2023 ^[1].

The ITU does not write the detailed technology itself. It defines what a 6G system must achieve, and industry bodies propose technologies that meet those requirements. The main one is 3GPP (the 3rd Generation Partnership Project), which says its Release 21 will be the first normative 6G release, meaning the first set of binding technical specifications, and that the same release will also include substantial 5G-Advanced work ^[4].

The short answer to “what is 6G?” is therefore: a set of goals agreed at the ITU, and a technology that 3GPP is still specifying. As of 3 November 2026, no finished 6G standard exists ^[4].

What is 6G meant to be used for?

The ITU lists six usage scenarios: immersive communication; hyper reliable and low-latency communication; massive communication; ubiquitous connectivity; artificial intelligence and communication; and integrated sensing and communication ^[3]. Its overarching principles include sustainability, security and resilience, connecting the unconnected, and ubiquitous intelligence ^[3].

When will 6G be available?

Two timelines matter: the ITU's approval process and 3GPP's specification schedule.

ITU. After the 2023 framework, the ITU describes 2024–2027 as the phase for defining requirements and evaluation criteria ^[2]. Its expert group, Working Party 5D, completed a draft report on technical performance requirements in February 2026 and a draft report on evaluation guidelines in June 2026; both go to ITU-R Study Group 5 for approval in December 2026 ^[2]. The ITU's call for proposals asks for candidate technologies to be submitted between February 2027 and February 2029 ^[2].

3GPP. At its June 2026 plenary meetings, 3GPP agreed the Release 21 timeline: package approval and Stage-1 freeze in March 2027, Stage-2 freeze in June 2028 (with an 80% checkpoint in March 2028), Stage-3 freeze in December 2028, and ASN.1/OpenAPI freeze in March 2029 ^[4]. Light Reading reported the decision as giving the industry 33 months to finalise the specifications ^[7].

Commercial launch. Equipment makers set their own targets. Ericsson says it is part of an industry coalition with Qualcomm working toward 6G commercial systems from 2029 onwards, and that commercial 6G is targeted for 2030 ^[6]. Light Reading likewise described the 3GPP timeline as putting 6G on track for commercial deployment around 2030 ^[7]. These are plans, not guarantees; earlier forecasts have already moved. In 2022 Ericsson expected 3GPP to finalise 6G specifications by 2028 ^[8], while the agreed schedule now runs to March 2029 ^[4].

How fast will 6G be compared with 5G?

The ITU's framework lists capabilities with values it calls estimated targets for research and investigation ^[1]. It gives 50, 100 or 200 Gbit/s as possible examples of peak data rate for specific scenarios, compared with 20 Gbit/s for 5G (IMT-2020), and 300 or 500 Mbit/s as examples of user-experienced data rate, compared with 100 Mbit/s for 5G ^[1].

These numbers need careful reading. Peak data rate is the maximum achievable rate under ideal conditions for one device ^[1]. The ITU also states that the values apply only to some usage scenarios, may depend on frequency, bandwidth and deployment, and may not be reached simultaneously ^[1]. A phone in a busy street should not be expected to reach 200 Gbit/s.

The more relevant numbers will be the minimum technical performance requirements. ITU's draft report sets out 20 of them, seven new and specific to 6G ^[3]. ITU itself notes that such requirements set minimum performance levels and do not guarantee real-world deployment performance ^[3]. In March 2026 the ITU said the draft was available only to ITU-R members directly involved in finalising and approving it ^[3].

What about 6G is real, and what is hype?

Confirmed

• The ITU has an approved 6G framework, M.2160 ^[1], and a draft set of 20 minimum requirements awaiting approval ^[3].
• 3GPP has an agreed Release 21 schedule ending with an ASN.1/OpenAPI freeze in March 2029 ^[4].
• WRC-27, the 2027 world radiocommunication conference, has an agenda item to study new frequency bands for mobile use ^[5].
• Vendors have shown lab prototypes, such as Ericsson and Qualcomm's cmWave exploration around 6–8 GHz and an Ericsson and Apple demonstration of spectrum sharing between 5G and a simulated 6G system ^[6].

Targets and claims, not yet facts

• Headline speeds such as 200 Gbit/s are research examples ^[1], not promised user speeds.
• Terabit-per-second speeds are linked to sub-terahertz bands (92–300 GHz in Ericsson's analysis), which Ericsson says cannot replace lower frequencies ^[8]. The ITU notes major challenges above 92 GHz, including limited transmission power, high propagation losses and blockage ^[1].
• A 2030 commercial launch is an industry target ^[6][7].

A practical test follows from the timeline: because 3GPP's first 6G specifications are not due to be complete until March 2029 ^[4], a product sold in 2026 cannot conform to a finished 6G standard, whatever its marketing says.

Which radio frequencies will 6G use?

Spectrum is allocated internationally at ITU world radiocommunication conferences. WRC-27 agenda item 1.7 calls for sharing and compatibility studies and technical conditions for mobile (IMT) use of 4 400–4 800 MHz, 7 125–8 400 MHz (or parts thereof) and 14.8–15.35 GHz, taking into account the existing services in and next to those bands, under Resolution 256 (WRC-23) ^[5]. Those bands are already used by other services, so the outcome is not settled until the conference decides ^[5].

Industry interest centres on this middle range. Ericsson's spectrum analysis concluded it should initially focus on 7–15 GHz, describing the wider 7–20 GHz range as essential for capacity-demanding 6G use cases ^[8]. Higher bands remain a complement: the ITU says bands above 92 GHz could be feasible for some deployment scenarios, with typical uses such as hot spots, sensing and wireless backhaul ^[1].

Harmonising spectrum across countries matters because, as the ITU explains, it supports economies of scale, global roaming and more affordable equipment ^[1].

What can 6G do besides faster downloads?

Two of the ITU's six scenarios go beyond classic mobile broadband. Integrated sensing and communication means using the radio network itself to sense the environment; the ITU lists capabilities such as range, velocity and angle estimation, object detection, localisation, imaging and mapping ^[1]. AI and communication is a separate scenario, and “ubiquitous intelligence” is one of the ITU's overarching principles for 6G ^[3].

The framework also sets research targets for positioning accuracy of 1–10 cm, connection density of one million to 100 million devices per square kilometre (10^6 to 10^8) and mobility of 500–1,000 km/h ^[1]. The ITU expects IMT-2030 to be modular, so features can be added step by step as countries need them ^[1].

How 6G will coexist with 5G is still being worked out. Light Reading reported in June 2026 that 3GPP expected to narrow the 5G-to-6G migration options at its September 2026 plenary, a choice with large implications for radio hardware already shipping ^[7]. As of 3 November 2026, 3GPP's Release 21 page does not record a decision on those options ^[4]. One building block is spectrum sharing between 5G and 6G, which Ericsson and Apple have demonstrated with a simulated 6G system ^[6].

What are the benefits and risks of 6G?

Potential benefits

• Higher capacity and speed targets than 5G, including user-experienced rates of 300 or 500 Mbit/s as examples ^[1].
• New services such as network-based sensing and centimetre-level positioning targets ^[1].
• Stated goals of sustainability and connecting the unconnected ^[3].

Limits and risks

• Spectrum for 6G must be shared with existing services, which WRC-27 studies must protect ^[5].
• The highest bands face short range and blockage problems ^[1].
• Requirements describe minimum performance and do not guarantee what users will see ^[3].
• Timelines depend on many decisions still open, including migration options from 5G ^[7].

What should you watch for next?

The next milestones are concrete and dated. In December 2026, ITU-R Study Group 5 is due to consider the requirements and evaluation-guideline reports ^[2]. From February 2027 the ITU submission window for candidate 6G radio technologies opens ^[2]. In March 2027 3GPP reaches its Release 21 Stage-1 freeze ^[4]. In 2027 WRC-27 decides on agenda item 1.7 bands ^[5]. Stage-3 freeze follows in December 2028 and the ASN.1/OpenAPI freeze in March 2029 ^[4], with commercial 6G targeted for 2030 by Ericsson ^[6].

For consumers, nothing needs doing now. 5G-Advanced development continues alongside 6G in Release 21 ^[4], so current 5G phones and networks will keep receiving improvements while 6G is being specified.